Valve grinder



W. H. HEATH.

VALVE GRINDER.

APPLICATION FILED Nov. 5, 1919.

Patented May 2, 1922.

' Chrome T all whom it may concern:

UNITE D; PAT

" wILtARn H. orsroKANE, wasnrncroin vALvE GRINDE 1 Beit known that I, WILLAIna a citizen of the United States, residing Spokane, in Spokane countyiand State 0t .VVashington, have invented certain new and useful Improvements in Valve Grinders, of which the followingis a specification.

The present invention relates'to an im- 7 proved portable valvegr inding tool adapted f grinding the valves and valve seat of;

internal combustion engines, and while the invention is especially applicable for. use in connection with the grindingof valves of Ford automobiles, or rather, for grinding the valves of the Ford motors, yet it is capable ofuse on any type-of engine'involvinga construction wherein thetop of the engine is removable to gain access to the valves and their seats. is I The subject matter of the invention is a hand operated tool that is capable of compact storing, and which occupies but vcomparatively small space for storing when not in use, and which may be assembled and placed in operative position for grinding the valves and their seats with facility, and

with equal dispatch and convenience may be disassembled, and stored away.

The invention consists in certainnov'el combinations and arrangements of parts as hereinafter described and claimed and as illustrated in the drawings wherein the physical embodiment of the invention is constructed according to the best mode so far devised for the practical application of the principles of'the invention.

Figure 1 is a sectional view of so much of an internal combustion engine, showinga valve and its seat, as is necessary to illustrate the application of the invention.

Figure 2 is a sectional view of the handle of the tool'showing a spring stored therein, when not in use.

In order that the invention may be readily understood the upper part of the engine, of

ing 5, and the valve head is fashioned with a pair of diametrically disposed sockets 6, 7 in its upper surface, which are bored 7 therein to adapt it for use with the grinding tool of the invention.

The operating tool comprises essentiallythe handle 8 fashioned preferably of metal the valve-stem bearing 5. '7 Fromv above, the tool is p means of, the inverted L-shapebar 14L, thr'ead- 9 with a spherical head-9,1andthe.lowerend i of, the handle has a pair of pins 10 project mg 'therebelow complementary with and 7, provided in the vupper face 'Offl tllG valve. The handle is bored outto provide arecess 11 in which the spring-12 is storechandretained by the cotter-pin-13, whenanotin use, butthei'head possesses suflicient weight i to counterbalance theymovement of the, grinding tool as thelatter-is oscillated be or vertical,: andthe hands being: also held in vertical planesnwh-ile the hands are; alter- Specification of Iietters Patent. I 'Application filed November 5,1919. seriai'no. ssassei "tween the-two handszof the operator. T-hus, to oscillate the tool, the head is held between i the'palms of therhandsathe tool being erect action gives thetool an oscillatory inovement 1n a hor zontal plane, the tool turning r first in one direction and then the reverse direction. The tool and in Figure 1 it will be seen that the valve spring 12 which has-been removed-from its pocket 11 in the handle, and interposed be; tween the under face of the valve-head andf supported ed at15 into one of.- the threadedholes in the engine casing which receives a bolt to secure f Y the topon the engine. Afterfthe securing bolts and top have been renoved from the top of the engine, this bar is threaded into one of the bolt holes, as a temporary support for the tool, and the bar supports the tool through the instrumentality of-the'spring pressed bearing [pin 16 passed vertically is supported. at its lower end by the p111 and socket connection with the valve,

through the horizontally disposed eye" 17 with a lower head19 ofconical shape to'fit into the socket 20 of the bearing block 21 v seated in the upper end of the-tool handle and. below by the respective springs 22 and formed as a'flat boss on the short arm 18 of; the supporting-bar. The pin, is fashioned o '9, and. between the conical head of the 'pin a .vand the boss 17 a spring 22 is interposed.

As above specified it will be seen thatthe j' tool" handle is resiliently supported above- 12 thus permitting a vertical reciprocation,

to a limited degree,of the tool which enables the valve head to be lifted fromits se'atby the spring 12in order that the valve, when lifted, will release the abrasive used in grinding and permit it to fall from the valve seat as the grinding progresses. Vith the parts in tllB'POSltlOll shown in I Figure 1, the twovhands, spread fiat and held vertically, are applied at the sides of the; tool-head 9 and an alternating recipro eating motion of the hands with 'a rubbing movement on the tool handle causes the tool and valve to oscillate, with the valve stem valve and conical bearing head 19 as the centerv of movement, and the continuous oscil- 'latlon of the tool and valve'on this axis effects the grinding of the valve in its seat. The tendency of the spring 12, which has a tension superior to that of the spring 22, is

to lift the valve from its seat, andtherefore the hands of the operator, by a downward pressure on the head 9, hold the valve on its seat during the grinding movement, and

f during this movement the relative position of the Valve in its Seat is frequently changed in order to avoid grinding these parts unevenly. The grinding and re-adjusting of the valve is continued untll desired close or tight fit 'isfseeured between the valve and its seat, and then the parts maybe disassembled quickly and with facility by lifting the tool against the tension of the spring 22to remove the two retaining pins 10 from the valve, and then the tool is Withdrawn'from its conical head. The spring l2-is Withdrawn from the valve stem and placed in its pocket in the tool head and the cotter pin a 13 inserted to retaln it, after which the supa hand operated grinding tool of an oscillatable handle and retaining pins on said handle to engage sockets in a Valve, a resilient-support for the valve, a supporting post having abearing, a pin in the bearing and'provided with" a bearing to engage said handle, and V a spring between the post bearing and pm bearing.

In testimony whereof I afiix my Signature.

WILLARD 111 HEATH. 

